Monica E. O'Neill

Monica E. O'Neill: Attorney with Thomas, Thomas & Hafer LLP AV stamp icon
Attorney Awards


Monica is admitted to practice in Pennsylvania, New Jersey and New York. As an Assistant District Attorney in the Kings County District Attorney’s Office, Brooklyn, New York, she specialized in investigating and prosecuting arson and economic crimes. Her practice focuses in the area of insurance defense, including property, arson, casualty, fraud and construction litigation.

She has been published in numerous insurance industry publications and is a frequent speaker at national and regional conferences of PLRB and IASIU in the areas of arson investigation, fraud detection and the adjustment of property claims. She currently is a member of the Philadelphia Loss Conference and is frequently appointed by the Philadelphia County Court of Common Pleas to preside over settlement conferences as a Judge pro tem.


•PDI and PADC Host Panel Discussion and Reception for Drexel University School of Law Students
•eNotes: Liability - November 2018

(Also at Clinton, New Jersey Office)

Areas of Practice (4)

  • Construction, Surety & Design Professionals
  • General Liability
  • Insurance Coverage & Bad Faith
  • Property - SIU

Education & Credentials

Contact Information:
215.564.2928 x8503  Phone
215.564.3281  Fax
University Attended:
Roger Williams College, B.A., magna cum laude, 1976
Law School Attended:
Temple University School of Law, J.D., 1979
Year of First Admission:
U.S. District Court, Eastern District, Pennsylvania; U.S. District Court. Eastern District, New York; U.S. District Court, Southern District, New York; U.S. District Court, New Jersey; Pennsylvania; New Jersey; New York

Professional Associations & Memberships

Philadelphia Loss Conference - Member

IASIU, Delaware Valley Chapter - Of Counsel

Philadelphia Bar Association - Member

Claims & Litigation Management Alliance - Member

Pennsylvania Defense Institute (PDI) - Board of Directors (Secretary)


Peer Reviews

4.9/5.0 (1 review)
A Martindale-Hubbell Peer Rating reflects a combination of achieving a Very High General Ethical Standards rating and a Legal Ability numerical rating.
  • Legal Knowledge

  • Analytical Capability

  • Judgment

  • Communication

  • Legal Experience


*Peer Reviews provided before April 15, 2008 are not displayed.



Philadelphia, Pennsylvania

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